270 Messrs. Jackson and Alger on the 
lar six-sided prisms, whose pyramidal terminations correspond 
very nearly with the lateral planes of the crystal. Though usual- 
ly much smaller, they resemble m color the beautiful crystals of 
the asparagus stone from Spain; and as the want of phosphores- 
cence is said to characterize that variety, they lay claim to the 
same title. But we find on trial, that phosphorescence is not con- 
fined to the common varieties of the calcareous phosphate, but 
is even possessed by some of the asparagus stone from Spain. 
The crystals at this locality, are imbedded in thin folia of siliceous 
sinter, that occasionally forms irregular shaped masses adhering 
to the veins of calcareous spar with which they have come down 
from the cliff. They are often interspersed with small shining 
scales, or tabular crystals, of specular iron. 
The ‘opal presents itself in specimens that are well character- 
ized, of a wax-yellow color with a resinous lustre approaching 
that of pitchstone ; it is translucent at some distance from its splin- 
tery edges; and in these respects it principally appears to differ 
from the jasper with which it is associated, and into which it 
evidently passes. Like the former, and the next substance to be 
mentioned, it is rare on this island, and has not been met 
with elsewhere in Nova Scotia. The albin, accompanying 
large and beautiful sheafs of yellow stilbite, is in opake, 
nearly milk-white crystals, some of them resembling, in their mod- 
ifications, the crystals of this mineral from Bohemia. The termi- 
nal edges of the primary right-square prisms are replaced by 
single planes, which, extending over the lateral planes of the 
crystals, produce two four-sided pyramids, and thus result in octa- 
hedrons with square bases. But usually these replacements do 
not greatly obscure the primary figure of the crystals. They 
present strie parallel to their base, in which direction they readily 
